Jannik Sinner, who is chasing a record fifth straight Masters title, described Carlos Alcaraz’s injury withdrawal from the Madrid Open as ‘tough to swallow’

Jannik Sinner, who is chasing a record fifth straight Masters title, described Carlos Alcaraz’s injury withdrawal from the Madrid Open as ‘tough to swallow’

Smart scheduling is key to longevity and avoiding injuries, and the Spaniard has sometimes paid for his imprudence